Optical module

Abstract

The optical module includes a housing, a lid that closes an opening of the housing, an optical component arranged inside the housing, and a printed circuit board arranged on a front surface of the lid outside the housing so as to be used as a board on which a control circuit that controls the optical component is mounted. The optical module further includes a side electrode that is provided on a side surface of the housing and configured to be electrically connected to an electrode of the optical component; and a flexible substrate that provides electrical connection between the side electrode and an electrode of the control circuit. The optical module can be miniaturized by integrating the optical component and the control circuit.

What is claimed is: 
     
       1. An optical module comprising:
 a housing; 
 a lid that closes an opening of the housing; 
 an optical component arranged in the opening of the housing; 
 a printed circuit board that is arranged on a front surface of the lid outside the housing when the lid closes the opening, and on which a control circuit that controls the optical component is mounted; 
 a side electrode provided on a side surface of the housing and electrically connected to an electrode of the optical component; and 
 a flexible substrate that provides electrical connection between the side electrode and an electrode of the control circuit; 
 wherein the optical module inside the housing is arranged below the lid and the control circuit outside the housing is arranged above the lid, the optical module is a structure to electrically shield between the control circuit and the optical component by using the lid. 
 
     
     
       2. The optical module according to  claim 1 ,
 wherein the control circuit includes: 
 a first control circuit mounted on a front surface of the printed circuit board; and 
 a second control circuit mounted on a back surface of the printed circuit board, and 
 the printed circuit board is arranged on the front surface of the lid so that the second control circuit is housed in a recess formed on the front surface of the lid. 
 
     
     
       3. The optical module according to  claim 1 ,
 wherein the optical component includes: 
 a light source that emits an optical signal; an optical transmission circuit that transmits an first signal using the optical signal from the light source; and an optical reception circuit that receives a second signal using the optical signal from the light source. 
 
     
     
       4. The optical module according to  claim 1 , wherein the optical component is hermetically sealed inside the housing by using the lid. 
     
     
       5. The optical module according to  claim 1 ,
 wherein the lid is 
 formed of a metal material. 
 
     
     
       6. The optical module according to  claim 1 ,
 wherein the lid is 
 formed of a material that blocks electrical noise. 
 
     
     
       7. The optical module according to  claim 1 , wherein the flexible substrate and the side electrode are electrically connected by an anisotropic conductive adhesive.